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Hyundai Equus: Heated Oxygen Sensor (HO2S) Description and Operation - Engine Control System - Engine Control/Fuel System - Hyundai Equus VI 2009-2026 Service ManualHyundai Equus: Heated Oxygen Sensor (HO2S) Description and Operation

Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. The sensor output voltage varies in accordance with the air/fuel ratio.
The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater which is controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

    Knock Sensor (KS) Repair procedures
    Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group). 3. Disconnect ...

    Heated Oxygen Sensor (HO2S) Specifications
    Specification A/F Ratio (x)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4 ItemSpecificationHeater Resistance (x)Approx. 9.0 [21°C(69.8°F)] ...

    See also:

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    AVN(Audio Video Navigation) head unit Components and Components Location
    Components Connector Pin Information No.Connector AConnector B1-MM CAN high2Rear camera vedio-3Rear camera vedio GND-4--5SPDIF GND-6SPDIF (+)IGN 1 B(+)7-AUX video8Illumination (+)AUX R input9R P ...

    Sunroof Motor Repair procedures
    Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the overhead console then remove the sun roof motor mounting screws (3EA). And then remove the sunroof motor (A) after ...

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